Earlier quoted context omitted.
No because if it's standard, they will ask you to disable travel mode and download all the data. You can say no, but you can't refuse and cross the border. It's not a technical problem.
Border forces are not allowed to intentionally access remote data[0]. [0] https://www.nbcnews.com/news/us-news/border-patrol-says-it-s...
Again, it's not a technical problem. Abusive people are abusive.
Law enforcers are not good people because of their title, society shape them in who their are and how they behave. Currently, in the US, they are not shaped to be helping citizen.